The laboratory you joined is studying the life cycle of an animal virus that use

Question

The laboratory you joined is studying the life cycle of an animal virus that uses a circular, double-stranded DNA as its genome. Your project is to define the location of the origin(s) of replication and to determine if replication is unidirectional or bidirectional To accomplish your goal, you isolated replicating molecules, cleaved them with a restriction nuclease that cuts the viral genome at one site to produce a linear molecule from the circle, and examined the resulting molecules under the electron microscope Some of the molecules you observed are illustrated schematically in the figure below. How many origins of replication are there in the viral genome? Is replication unidirectional of bidirectional?

Explanation / Answer

Viruses have single origin of replication.

unidirectional nucleic acid replication mode assist in viruses to do replication of genetic material. Circular modes guaranteed the preservation of genetic information.

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